The cost of xede and exhaust is only 3k for the 335. Not sure where the 4k price came from.

Hmph, me neither!

The OP must've meant 3,000- but mistyped it. Still, the price difference stands- you are getting a whole lot more product(s) for your Mitsubishi 4,200 than you are for your BMW 3,000. Is it not just typical German Car Price Enflation?

I sure hope not- cuz I do plan on getting something like this later,
-Chris